I recommended this to a friend’s husband. He called the next day to complain about “Horrible 70’s soft-rock”. I told him to give it a chance. A month on and he was playing it every day. The greatest ever concept album about a mathematician living in a 19th Century American town.

I really wasn’t sure about putting this in the list. Great singer, great musician, some great songs, but the album? Then I listened to it again and changed my mind. It’s great. Though I think she could do much better.